Singular Systems

Jep Java

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Latest Release: Jep 3.4

Released Nov 1, 2010
Changes since 3.3:

  • Allows combined use of BigDecimals and strings
  • Improved extendibility through subclassing
  • Bug fixes
  • and much more...

Jep Java parses and evaluates mathematical expressions with only a few lines of code. This package allows your users to enter a formula as a string, and instantly evaluate it. Jep supports user defined variables, constants, and functions. A number of common mathematical functions and constants are included.


  • Small size (under 300KB as jar archive)
  • Fast evaluation
  • High precision using BigDecimals
  • Includes common math functions and operators
  • Supports Boolean expressions
  • Extendable and configurable architecture
  • Support for strings, vectors and complex numbers
  • Support for implicit multiplication
  • Allows declared or undeclared variables
  • Java 1.5 compatible
  • Supports Unicode characters
  • Extensive documentation
  • Includes JavaCC grammar from which the main classes are generated

Try it!

A trial version of Jep is available for download -- so please download it and give it a try! To purchase a Jep license, visit the Order page for more information.